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FNP: Heart Failure

Heart failure management spans primary and specialty care and is a high-yield FNP topic. These questions cover recognition, guideline-directed therapy, monitoring, and education — each with a full rationale.

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  • 💡 Key Takeaways — the one transferable rule per question
  • 🔍 Hint highlights — the decisive cue phrases in each stem
  • 📖 Full rationales — why every option is right or wrong

Every FNP question is written to the current exam outline for quick learning and a clear pass strategy.

Written and reviewed by the LexPort exam-prep team, led by our Founder & Exam-Prep Lead. LexPort builds certification practice questions — this is exam-preparation material, not medical advice. Last reviewed August 2026.

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Test yourself: FNP: Heart Failure

Three FNP practice questions on fnp: heart failure — tap an answer for instant feedback. The app has 3,000+, timed and scored.

Question 1

A 28-year-old male presents with a cough for 9 weeks. He reports frequent throat clearing and nasal congestion but denies heartburn, wheezing, or shortness of breath. Examination of the oropharynx reveals a cobblestone appearance with clear mucoid drainage. Lung auscultation is unremarkable. Which of the following is the most appropriate initial intervention?

Why A is the answer

The patient exhibits classic signs of upper airway cough syndrome, formerly known as post-nasal drip, which is the most common cause of chronic cough in adults. The history of throat clearing combined with oropharyngeal cobblestoning strongly supports a trial of a first-generation antihistamine and decongestant, which acts empirically to dry mucosal secretions. Option B is incorrect because a proton pump inhibitor targets acid reflux, which does not cause nasal congestion or cobblestoning. Option C is incorrect because a chest radiograph is unnecessary for a classic upper airway presentation lacking lower respiratory red flags. Option D is incorrect as inhaled corticosteroids treat asthma or eosinophilic bronchitis, not upper airway secretions. Utilizing an empiric trial for this syndrome is a cost-effective, guideline-supported approach that confirms the diagnosis upon symptom resolution.

🔑 Key takeaway

Upper airway cough syndrome is empirically treated with a first-generation antihistamine and decongestant combination.

Question 2

A 70-year-old with community-acquired pneumonia has a history of heart failure and an electrocardiogram showing a baseline QTc interval of 520 ms. Which antibiotic regimen is most appropriate?

Why B is the answer

This patient requires broad coverage due to underlying comorbidities, but the prolonged QTc interval strictly contraindicates the use of macrolides (like azithromycin) and fluoroquinolones (like levofloxacin) due to the high risk of fatal arrhythmias such as torsades de pointes. A beta-lactam combined with doxycycline provides the necessary coverage for typical and atypical pathogens without affecting the cardiac conduction system. High-dose amoxicillin monotherapy lacks sufficient beta-lactamase stability for a patient with heart failure, and combining it with azithromycin introduces cardiac risk. Cefpodoxime with levofloxacin would dangerously exacerbate the existing electrical abnormality.

🔑 Key takeaway

Doxycycline should replace macrolides or fluoroquinolones in pneumonia combination therapy when patients have prolonged QTc intervals.

Question 3

A 62-year-old taking ramipril 10 mg for heart failure presents for a routine follow-up. He recently started an over-the-counter medication for osteoarthritis pain. Today, his potassium level is 5.6 mEq/L. Which action is most appropriate?

Why B is the answer

ACE inhibitors reduce aldosterone secretion, which inherently increases the risk of hyperkalemia. Concurrent use of nonsteroidal anti-inflammatory drugs for osteoarthritis further impairs renal potassium excretion by inhibiting prostaglandins, leading to clinically significant hyperkalemia. Option A is incorrect because acetaminophen does not affect renal potassium handling and is safe to continue. Option C is contraindicated because adding a potassium supplement would dangerously exacerbate the patient's current hyperkalemia. Option D is an overreaction since a potassium of 5.6 mEq/L without ECG changes in a stable outpatient does not require urgent hemodialysis. Removing the offending interacting medication is the best initial step.

🔑 Key takeaway

Concurrent use of NSAIDs and ACE inhibitors significantly increases the risk of developing clinically significant hyperkalemia.

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Question 1

A 72-year-old patient with postherpetic neuralgia and NYHA Class III heart failure was started on pregabalin 75 mg twice daily two weeks ago. The patient now presents with increased shortness of breath and 2+ pitting edema in both lower extremities. What is the most appropriate intervention?

  • A) Discontinue the pregabalin immediately to prevent sudden fluid retention.
  • B) Increase the daily furosemide dose and maintain the pregabalin.
  • C) Taper the pregabalin gradually while monitoring fluid status closely.
  • D) Switch the pregabalin to gabapentin to resolve the swelling.

💡 Key Takeaway

Gabapentinoids can cause fluid retention exacerbating heart failure but must be tapered gradually to prevent withdrawal.

Show rationale

Pregabalin and gabapentin can cause peripheral edema, which is particularly dangerous for patients with underlying heart failure. Because this patient is experiencing an acute exacerbation of heart failure symptoms, the medication must be stopped. However, gabapentinoids must be tapered gradually over at least one week to prevent withdrawal symptoms like agitation, anxiety, and seizures. Option A is incorrect because abrupt discontinuation risks precipitating withdrawal seizures. Option B is incorrect because treating an adverse drug effect with another medication while continuing the offending agent is inappropriate, especially in decompensated heart failure. Option D is incorrect because gabapentin shares the exact same risk for causing peripheral edema and would not resolve the patient's swelling.

Question 2

A 68-year-old male with heart failure with reduced ejection fraction presents with an acute, severely painful flare of osteoarthritis isolated to his left knee. He cannot bear weight.

  • A) Prescribe a short course of oral dexamethasone.
  • B) Recommend scheduled oral naproxen for one week.
  • C) Perform an intra-articular corticosteroid knee joint injection.
  • D) Initiate daily oral colchicine for flare management.

💡 Key Takeaway

Intra-articular corticosteroid injections provide rapid relief for acute, localized osteoarthritis flares while avoiding systemic risks.

Show rationale

The patient has an acute, severely painful flare isolated to a single joint, complicated by heart failure with reduced ejection fraction. Performing an intra-articular corticosteroid knee joint injection delivers rapid, potent localized relief while minimizing systemic absorption. Recommending scheduled oral naproxen is strictly contraindicated because NSAIDs cause sodium and water retention, which can easily exacerbate his heart failure. Prescribing a short course of oral dexamethasone exposes him to unnecessary systemic glucocorticoid effects when targeted local therapy is available. Initiating daily oral colchicine is indicated for acute gout flares, not for osteoarthritis exacerbations.

Question 3

A patient with end-stage heart failure is currently enrolled in home hospice. During a routine visit, the patient's spouse reports severe physical and emotional exhaustion from providing round-the-clock care and expresses fear of being unable to continue. Which intervention should the nurse practitioner initiate?

  • A) Revoke hospice status for permanent nursing facility placement.
  • B) Arrange for temporary inpatient hospice facility respite care.
  • C) Prescribe a daily antianxiety medication for the spouse.
  • D) Discontinue hospice and resume standard home health services.

💡 Key Takeaway

Medicare hospice benefits include temporary respite care to relieve severe caregiver strain and prevent burnout.

Show rationale

Caregiver exhaustion is a common and critical issue in home hospice. The Medicare hospice benefit specifically includes respite care, which allows the patient to be temporarily admitted to an inpatient facility for up to five days to provide relief and prevent caregiver burnout. Option A is incorrect because nursing facility placement does not require revoking hospice; hospice can be provided in a facility, but temporary respite should be tried first. Option C inappropriately medicalizes the spouse's situational exhaustion without addressing the root cause of the physical burden. Option D is incorrect because discontinuing hospice would remove the essential end-of-life support the patient currently requires.

Question 4

An older adult with NYHA Class III heart failure presents with worsening dyspnea and fatigue. The patient expresses a strong desire to focus on comfort but explicitly desires continued milrinone infusions to maintain their current quality of life. Which action should the nurse practitioner take?

  • A) Refer the patient to home hospice services.
  • B) Consult palliative care for symptom management support.
  • C) Stop milrinone to meet hospice admission criteria.
  • D) Admit to skilled nursing for physical rehabilitation.

💡 Key Takeaway

Palliative care can be provided concurrently with life-prolonging treatments to manage symptom burden.

Show rationale

This patient is experiencing a high symptom burden but still wants to continue life-prolonging therapies like milrinone. Palliative care is the best choice because it focuses on symptom management and quality of life while allowing the patient to receive concurrent life-prolonging therapies. Option A is incorrect because hospice requires the patient to forgo curative or life-prolonging treatments for their terminal diagnosis. Option C is inappropriate because the patient's goals of care explicitly include continuing the infusion, and forcing discontinuation violates patient autonomy. Option D ignores the primary need for specialized symptom management and goals of care alignment.

Question 5

A 74-year-old female with atrial fibrillation and heart failure with reduced ejection fraction (LVEF 30%) complains of continuous palpitations. Her resting Heart rate is 118 bpm. She currently takes apixaban and lisinopril but no rate-controlling medications. Which medication should the nurse practitioner prescribe?

  • A) Initiate oral verapamil therapy immediately.
  • B) Initiate oral diltiazem therapy immediately.
  • C) Initiate oral amlodipine besylate therapy.
  • D) Initiate oral metoprolol succinate therapy.

💡 Key Takeaway

Beta-blockers are the preferred rate control agents for atrial fibrillation in patients with reduced ejection fraction.

Show rationale

In patients with atrial fibrillation and heart failure with reduced ejection fraction, beta-blockers like metoprolol succinate are the preferred agents for rate control because they provide significant mortality benefits. Non-dihydropyridine calcium channel blockers, such as verapamil and diltiazem, are strictly contraindicated in this population due to their negative inotropic effects, which can significantly worsen heart failure symptoms. Amlodipine is a dihydropyridine calcium channel blocker; while it is safe to use in heart failure, it does not provide atrioventricular nodal blockade and therefore will not control her elevated heart rate.

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FNP · Exam Simulator

A 72-year-old patient with postherpetic neuralgia and NYHA Class III heart failure was started on pregabalin 7…

A) Discontinue the pregabalin immediately t
B) Increase the daily furosemide dose and m
C) Taper the pregabalin gradually while mon
D) Switch the pregabalin to gabapentin to r
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